141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/****************************************************************************
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* boards/arm/sam34/sam4l-xplained/src/sam_ug2832hsweg04.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* OLED1 Connector:
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*
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* See the board README file for connector pin-out.
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*
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* OLED1 signals
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*
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* DATA_CMD_SEL - Data/command select. Used to choose whether the
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* communication is data to the display memory or a command to the LCD
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* controller. High = data, low = command
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* DISPLAY_RESET - Reset signal to the OLED display, active low. Used during
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* initialization of the display.
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* DISPLAY_SS - SPI slave select signal, must be held low during SPI
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* communication.
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* SPI_MOSI - SPI master out, slave in signal. Used to write data to the
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* display
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* SPI_SCK SPI - clock signal, generated by the master.
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include <nuttx/board.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/ssd1306.h>
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#include "sam_gpio.h"
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#include "sam_spi.h"
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#include "sam4l-xplained.h"
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#ifdef CONFIG_SAM4L_XPLAINED_OLED1MODULE
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* The pin configurations here require that SPI1 is selected */
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#ifndef CONFIG_LCD_SSD1306
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# error "The OLED driver requires CONFIG_LCD_SSD1306 in the configuration"
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#endif
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#ifndef CONFIG_LCD_UG2832HSWEG04
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# error "The OLED driver requires CONFIG_LCD_UG2832HSWEG04 in the configuration"
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#endif
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#ifndef CONFIG_SAM34_SPI0
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# error "The OLED driver requires CONFIG_SAM34_SPI0 in the configuration"
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#endif
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#ifndef CONFIG_SPI_CMDDATA
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# error "The OLED driver requires CONFIG_SPI_CMDDATA in the configuration"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_graphics_setup
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*
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* Description:
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* Called by NX initialization logic to configure the OLED.
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*
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****************************************************************************/
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struct lcd_dev_s *board_graphics_setup(unsigned int devno)
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{
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struct spi_dev_s *spi;
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struct lcd_dev_s *dev;
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/* Configure the OLED GPIOs. This initial configuration is RESET low,
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* putting the OLED into reset state.
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*/
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sam_configgpio(GPIO_OLED_RST);
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/* Wait a bit then release the OLED from the reset state */
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up_mdelay(20);
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sam_gpiowrite(GPIO_OLED_RST, true);
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/* Get the SPI1 port interface */
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spi = sam_spibus_initialize(OLED_CSNO);
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if (!spi)
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{
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lcderr("ERROR: Failed to initialize SPI port 1\n");
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}
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else
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{
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/* Bind the SPI port to the OLED */
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dev = ssd1306_initialize(spi, NULL, devno);
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if (!dev)
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{
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lcderr("ERROR: Failed to bind SPI port 1 to OLED %d\n", devno);
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}
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else
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{
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lcdinfo("Bound SPI port 1 to OLED %d\n", devno);
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/* And turn the OLED on */
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dev->setpower(dev, CONFIG_LCD_MAXPOWER);
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return dev;
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}
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}
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return NULL;
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}
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#endif /* CONFIG_SAM4L_XPLAINED_OLED1MODULE */
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